1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _M68K_PAGE_NO_H 3 #define _M68K_PAGE_NO_H 4 5 #ifndef __ASSEMBLY__ 6 7 extern unsigned long memory_start; 8 extern unsigned long memory_end; 9 10 #define clear_page(page) memset((page), 0, PAGE_SIZE) 11 #define copy_page(to,from) memcpy((to), (from), PAGE_SIZE) 12 13 #define clear_user_page(page, vaddr, pg) clear_page(page) 14 #define copy_user_page(to, from, vaddr, pg) copy_page(to, from) 15 16 #define vma_alloc_zeroed_movable_folio(vma, vaddr) \ 17 vma_alloc_folio(GFP_HIGHUSER_MOVABLE | __GFP_ZERO, 0, vma, vaddr, false) 18 19 #define __pa(vaddr) ((unsigned long)(vaddr)) 20 #define __va(paddr) ((void *)((unsigned long)(paddr))) 21 22 #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) 23 #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) 24 25 #define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)) 26 #define page_to_virt(page) __va(((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)) 27 28 #define virt_addr_valid(kaddr) (((unsigned long)(kaddr) >= PAGE_OFFSET) && \ 29 ((unsigned long)(kaddr) < memory_end)) 30 31 #endif /* __ASSEMBLY__ */ 32 33 #endif /* _M68K_PAGE_NO_H */ 34